反应详情

To a solution of 11.4 g of crude 2-(N-allyloxycarbonylaminomethyl)-3-(t-butyldimethylsilyloxy)butylamine in 67 ml of tetrahydrofuran and 56 ml of water was added 2.8 ml of allyl chloroformate dropwise, while keeping pH 8-8.5 with 4N sodium hydroxide solution. The reaction mixture was extracted three times with chloroform, and the combined organic layer was washed with brine and dried over anhydrous magnesium sulfate. Evaporation of the solvent followed by column chromatography on silica gel (hexane:ethyl acetate=1:1) gave 5.34 g of 1-allyloxycarbonylamino-2-(N-allyloxycarbonylaminomethyl)- 3-t-butyldimethylsilyloxybutane.

1. extractionThe reaction mixture was extracted three times with chloroform
2. washthe combined organic layer was washed with brine
3. dry with materialdried over anhydrous magnesium sulfate
4. customEvaporation of the solvent